* The given message buffer is used for IPC operations wait()/receive()
* and received data can be extracted using the >> operator afterwards.
* In the case of indirect message parts a buffer of type Msg_in_buffer
* The given message buffer is used for IPC operations wait()/receive()
* and received data can be extracted using the >> operator afterwards.
* In the case of indirect message parts a buffer of type Msg_in_buffer